/**
 * Copyright 2006 gworks.com.au
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License. (http://www.apache.org/licenses/LICENSE-2.0)
 *
 * Unless required by applicable law or agreed to in writing, software distributed under the License is distributed 
 * on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for 
 * the specific language governing permissions and limitations under the License.
 *
 * <dhamma-message src="Atisha (11th century Tibetan Buddhist master)">
 *  The greatest achievement is selflessness. The greatest worth is self-mastery.
 *  The greatest quality is seeking to serve others. The greatest precept is continual awareness.
 *  The greatest medicine is the emptiness of everything. The greatest action is not conforming with the worlds ways.
 *  The greatest magic is transmuting the passions. The greatest generosity is non-attachment.
 *  The greatest goodness is a peaceful mind. The greatest patience is humility.
 *  The greatest effort is not concerned with results. The greatest meditation is a mind that lets go.
 *  The greatest wisdom is seeing through appearances. 
 * </dhamma-message>
 * 
 * @author Ashin Wimalajeewa (ash)
 */
package org.javaongems.std.client;

import java.util.HashMap;
import java.util.Map;

import com.google.gwt.core.client.GWT;

public class Gem {
	final static public String LOG_CALLER_FILTER_PROP = "gemsLogCallerFilterRegEx";
	
	static public Gem stone = new Gem();
	static protected String logCallerFilterRegEx;
	
	protected HashMap cargo = new HashMap();
	
	public Gem() {
		if (logCallerFilterRegEx == null)
			initialiseLogCallerFilter();
	}
	
	public Map getCargo() {
		return cargo;
	}
	
	public boolean isDebugEnabled() {
		return true;
	}
	
	public void log(Object callingCode, String msg, Throwable e) {
		String caller = null;
		if (callingCode != null) 
			caller = GWT.getTypeName(callingCode);
		log(caller, msg, e);
	}

	public void log(String caller, String msg, Throwable e) {
		boolean logIt = true;
		if (caller != null && logCallerFilterRegEx != null) {
			String[] splits = caller.split(logCallerFilterRegEx);
			logIt = splits.length > 1;
		}
		if (logIt)
			internalLog(caller, msg, e);
	}
	
	public void log(String msg, Throwable e) {
		log(null, msg, e);
	}

	public void log(String msg) {
		log(null, msg, null);
	}
	
	native static public String getProperty(String name) /*-{
    	return $wnd.__gwt_getMetaProperty(name);
  	}-*/; 
    
	protected void internalLog(String caller, String msg, Throwable e) {
		GWT.log(msg, e);
	}
	
	static private void initialiseLogCallerFilter() {
		logCallerFilterRegEx = getProperty(LOG_CALLER_FILTER_PROP);
	}
}
